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Business and Organization - Additional Information (Detail) (USD $) | 3 Months Ended
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Mar. 31, 2015
MARYLAND |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |
Company re-incorporated date | Mar. 24, 2011
Delaware [Member] |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |
Company re-incorporated date | May 25, 2004
California [Member] |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |
Company originally incorporated date | Jun. 14, 1997
Gladstone Land Advisers, Inc. [Member] |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |
Fees related to leasing of real estate or ancillary services | 0 land_FeesRelatedToLeasingOfRealEstateOrAncillaryServices / dei_LegalEntityAxis = land_GladstoneLandAdvisersIncMember
Company's ownership percent of voting securities of Land Advisers | 100.00%us-gaap_VariableInterestEntityOwnershipPercentage / dei_LegalEntityAxis = land_GladstoneLandAdvisersIncMember

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- Definition Date when an entity was incorporated + References No definition available. + Details
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- Definition Date of reincorporation. + References No definition available. + Details
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- Definition Fees Related To Leasing Of Real Estate Or Ancillary Services + References No definition available. + Details
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- Definition Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=28200181&loc=SL6759159-111685 + Details
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